Overhead Step up Step Down Single Phase Distribution Transformer
Overhead Step up Step Down Single Phase Distribution Transformer image
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Quick Details
Product Details
Single Phase Overhead Step up Step Down Distribution Transformer |
Silverstone Electric step-up/step-down transformer is a two winding transformer, specifically designed to transform between two different distribution-class voltages or to isolate between similar distribution-class voltages. Two-winding construction along with the use of full-width sheet secondary windings produces a unit with fault duty capabilities exceeding that of an autotransformer.
Contact our distributor or factory representative for availability of other kVA sizes, voltage ratings, features, accessories and design standards not listed
Ratings
• KVA Ratings (65° Rise)
50, 75, 100, 167, 250, 333, 500, 833
• High-Voltage Ratings
7200/12470Y or 12470 GrdY/7200 through
19920/34500GrdY or 34500GrdY/19920 (95 kV through 150 kV BIL)
• Low-Voltage Ratings
2400 (60 kV BIL) through 7970 (95 kV BIL)
Standard Features
• Meets or exceeds current IEEE, NEMA and RUS standards as applicable
• Shell-type core design
• Wet-process porcelain high-voltage bushings
(oil-filled at 125 kV BIL and above for reduced radio interference)
• Wet-process porcelain low-voltage bushings
• Tin-plated bronze terminals suitable for connection to copper or aluminum
• Visible cover ground connected to upper mounting bracket
• Tank grounding provisions
• Tank ground connector (1-bushing units only)
• Automatic pressure relief valve for added safety
• Mineral oil with oxidation inhibitor
• Mild steel tank, cover and ring
• Continuous-bead welding on lifting lugs and mounting brackets
for increased safety and corrosion resistance
• Recessed tank bottom for scuff protection
• Tough powder-paint finish for improved resistance to abrasion and corrosion
• 10 kV minimum cover and ring insulation
• Corrosion-resistant cover-ring hardware
• KVA marking on tank
• Internal oil-level mark
• Laser-engraved aluminum nameplate
Optional Features
• Stainless steel tank and/or cover and/or cover ring
• Lightning arrester mounting provisions
• Lightning arrester, externally-mounted or internally-mounted under oil
• High-voltage tap switch with external operating handle:
5-2.5% taps above normal; or 5-2.5% taps below normal;
or 2-2.5% taps above and below normal;
or taps at 13800/13200/12870/12540 for units rated 14400
• Dual high-voltage switch with external operating handle
• Dual low-voltage switch
• Drain valve with oil sampling device
• Temperature gauge
• Liquid level gauge
• Pressure/vacuum gauge
• Wildlife protection
• Overload warning signal light
• Tank ground connector (standard on 1-bushing transformers)
• Ester-based diielectric fluid
• Custom stenciling and labeling
• Laser engraved stainless steel nameplate
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